Avalanche Forecast

Issued: Dec 11th, 2016 4:00PM

The alpine rating is moderate, the treeline rating is low, and the below treeline rating is low. Known problems include Loose Dry and Persistent Slabs.

max darrah, Parks Canada

Jasper.

Summary

Weather Forecast

Alpine temperature to drop to -30C to start the week with light scattered flurries overnight, then slowly "warm" to -15C by mid-week. Winds to remain light Northwesterly. Clearing trend towards mid-week.

Snowpack Summary

Cold temps promoting faceting. Nov12 crust down 45 to 90cm and found between 2100-2600m on all aspects. Light snowfall may have buried recent surface hoar, particularly on sheltered North East aspects.

Avalanche Summary

No avalanches reported or observed. Poor visibility on road patrol.

Confidence

Problems

Loose Dry

Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.

Avoid travelling on ledges and cliffs where sluffing may have severe consequences.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2

Persistent Slabs

The Nov crust is down 40-90cm and is beginning to facet out, and lose strength and cohesion. There has been recent activity on this layer and requires respect.

The stable avalanche conditions still require careful decision making.Carefully evaluate and use caution around thin snowpack areas.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Valid until: Dec 12th, 2016 4:00PM